|本期目录/Table of Contents|

[1]吴刚,吴智深,罗云标,等.FRP网格约束混凝土圆柱的抗震性能[J].建筑科学与工程学报,2007,24(04):39-44.
 WU Gang,WU Zhi-shen,LUO Yun-biao,et al.Aseismic Performance of Circular Concrete Columns Confined with FRP Grids[J].Journal of Architecture and Civil Engineering,2007,24(04):39-44.
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FRP网格约束混凝土圆柱的抗震性能(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
24卷
期数:
2007年04期
页码:
39-44
栏目:
出版日期:
2007-12-20

文章信息/Info

Title:
Aseismic Performance of Circular Concrete Columns Confined with FRP Grids
作者:
吴刚12吴智深12罗云标1蒋剑彪3
1. 东南大学 土木工程学院,江苏 南京 210096; 2. 东南大学 城市工程科学国际研究中心, 江苏 南京 210096; 3. 北京特希达科技集团 南京研发中心,江苏 南京 210018
Author(s):
WU Gang12 WU Zhi-shen12 LUO Yun-biao1 JIANG Jian-biao3
1. School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China; 2. International Research Center of Urban Engineering Science, Southeast University, Nanjing 210096, Jiangsu, China; 3. Nanjing Research and Design Center, Beijing Texida Technology Group Corporation, Nanjing 210018, Jiangsu, China
关键词:
FRP网格 约束 抗震性能 混凝土圆柱
Keywords:
fiber reinforced polymer grid confinement aseismic performance circular concrete column
分类号:
TU378.3
DOI:
-
文献标志码:
A
摘要:
对纤维增强聚合物(FRP)网格约束混凝土圆柱进行了轴压荷载试验; 给出了FRP网格侧向约束强度和侧向约束刚度计算公式及FRP网格约束混凝土圆柱的应力-应变关系模型确定方法。在此基础上,进一步完成了FRP网格加固钢筋混凝土圆柱在低周反复荷载作用下的试验,重点探讨了FRP网格加固用量及FRP网格中纵筋是否锚入柱底座对试件承载力和变形能力的影响。结果表明,FRP网格约束后混凝土圆柱的强度和延性有明显提高,约束后的应力-应变关系曲线有无软化段主要与FRP约束量有关,FRP网格加固能明显提高钢筋混凝土结构的承载力和延性等抗震性能。
Abstract:
A series of axial compression load tests ofcircular concrete columns confined with FRP grids were carried out. The equations for calculating the lateral confinement strength, lateral confinement modulus, as well as the stress and strain relation models of circular concrete columns confined with FRP grids were suggested. Based on this, the circular RC columns strengthened with FRP grids were tested under constant axial load and reversed cyclic lateral load. The parameters including the confinement strength and modulus of FRP which the bearing capacity and deformability of specimens for the anchorage types of FRP grids at the bottom were mainly discussed. The results show that FRP grids can significantly improve the strength and ductility of circular concrete columns. The stress and strain relation curves of circular concrete columns confined with FRP grids may be with strain-softening response or not, which is strongly related to the confinement strength and modulus of FRP. The strengthening of FRP grids can obviously improve the aseismic performance including the capacity and ductility ofRC structures.

参考文献/References:

[1] 吴 刚,吕志涛. FRP约束混凝土圆柱无软化段时的应力-应变关系研究[J].建筑结构学报,2003,24(5):1-9. WU Gang,LU Zhi-tao.Study on the Stress-strain Re-lationship of FRP-confined Concrete Circular ColumnWithout a Strain-softening Response[J].Journal of Building Structures,2003,24(5):1-9.
[2]吴 刚,吕志涛.FRP约束混凝土圆柱有软化段时的应力-应变关系研究[J].土木工程学报,2006,39(11):7-14. WU Gang,LU Zhi-tao.Study on the Stress-strain Relationship of FRP-confined Concrete Circular Column with a Strain-softening Response[J].China Civil Engineering Journal,2006,39(11):7-14.
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[6]孙晓燕,黄承逵.外贴纤维布加固超载后钢筋混凝土桥梁构件抗弯性能试验[J].中国公路学报,2006,19(4):82-87. SUN Xiao-yan,HUANG Cheng-kui.Test on Flexural Performance of RC Bridge Member After Overload Reinforced with Externally Bonded FRP[J].China Journal of Highway and Transport,2006,19(4):82-87.
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[8]岳清瑞,曹 锐.纤维网格在建筑物结构加固改造中的应用[C]//岳清瑞.中国第二届纤维增强塑料混凝土结构学术交流会会议论文集.北京:清华大学出版社,2002:355-361. YUE Qing-rui,CAO Rui.Application of FRP Grids in Strengthening Buildings[C]//YUE Qing-rui.Proceedings of the 2nd National Conference on Application of FRP in Civil Engineering.Beijing:Tsinghua University Press,2002:355-361.
[9]H14.3,Seismic Design Specifications of Highway Bridges:Seismic Design,Explanation[S].

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备注/Memo

备注/Memo:
收稿日期:2007-10-28
基金项目:国家重点基础研究发展计划(“九七三”计划)项目(2007CB714200); 国家自然科学基金项目(50608015); 青海省科技厅攻关项目(2005G155)
作者简介:吴 刚(1976-),男,浙江东阳人,副教授,工学博士,E-mail:g.wu@seu.edu.cn。
更新日期/Last Update: 2007-12-20